Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11472221 | Writing implement | Takeo Fukumoto, Gouya Oono | 2022-10-18 |
| 11207913 | Erasing member and erasing tool using the same | Satoru Banzai, Toshimi Kamitani, Yosuke Setagawa, Hitoshi Kino | 2021-12-28 |
| 10576774 | Ballpoint pen | Takeo Fukumoto, Kazuhiko Furukawa, Yusuke Kobayashi, Tomoyuki Akagi | 2020-03-03 |
| 10507684 | Writing instrument | Yusuke Kobayashi, Kensuke INOUE, Kazuhiko Furukawa | 2019-12-17 |
| 10336129 | Writing implement | Takeo Fukumoto, Kazuhiko Furukawa | 2019-07-02 |
| 9889701 | Writing implement | Takeo Fukumoto, Kazuhiko Furukawa | 2018-02-13 |
| 9636940 | Writing instrument | Toshimi Kamitani, Satoru Banzai, Yoshiharu Namiki, Yosuke Setagawa, Hitoshi Kino +1 more | 2017-05-02 |
| 8944716 | Valved applicator | Yukinori Sawa | 2015-02-03 |
| 7394668 | Switching power supply circuit and frequency converter | Masahiro Hiraga, Tetsuya Kimura, Satoshi Ibori, Masayuki Hirota | 2008-07-01 |
| 7151680 | Switching power supply circuit and frequency converter | Masahiro Hiraga, Tetsuya Kimura, Satoshi Ibori, Masayuki Hirota | 2006-12-19 |
| 6927665 | Power converter | Kinya Nakatsu, Satoshi Ibori, Masayuki Hirota | 2005-08-09 |
| 6873240 | Power converter | Kinya Nakatsu, Satoshi Ibori, Masayuki Hirota | 2005-03-29 |
| 5353379 | Information reproducing apparatus and game machine including the same | Takeo Tobe | 1994-10-04 |
| 5143752 | Filtering material of apatite and glucan used for surgical masks and method of making it | Sumiaki Tsuru | 1992-09-01 |
| D293317 | Digital telephone and data exchange equipment cabinet | Mitsuhiro Umezu, Hiroshi Kikkawa, Mamoru Miyazaki | 1987-12-22 |